13
(Combustible material)
External wall,
combustible material.
• Inspection openings are suggested for the vent intake and exhaust
pipes if they are installed in an enclosure. These openings should
be near the entrance and exit of the vent into the enclosure.
• These openings should be
18" x 18" (450mm x 450mm).
Suggested inspection openings
18" x 18" (450mm x 450mm)
When the vent pipe passes through an enclosed space:
Ceiling
Sloping down toward the unit.
Vertical Vent Termination
Drain condensate
according to local codes.
Hanger
Straps
Elbow
Slope the
Vent Upward
Firestop
Condensate collector must be
used if the total vent run
exceeds 3' (0.9m).
Elbow
Firestop/
Support
Roof Flashing
(Base and Adapter)
Rain Cap
Air Intake
Pipe
3' (0.9m) or more
WARNING
Prohibited to install 90 degree adjustable
elbow (CVP-90ADJELB) in this portion.
Install 90 degree elbow (CVP-90ELB) only.
• Terminate at least 6' (1.8m) from the combus
-
tion air intake of any appliance, and 3' (0.9m)
from any other building opening, gas utility me
-
ter, service regulator etc.
• Enclose exterior vent systems below the roof
line to limit condensation and protect against
mechanical failure.
• When the vent penetrates a floor or ceiling and
is not running in a fire rated shaft, a firestop
and support is required.
• When the vent termination is located not less than
8' (2.4m) from a vertical wall or similar obstruc-
tion, terminate above the roof at least 2' (0.6m),
but not more than 6' (1.8m), in accordance
with the National Fuel Gas Code ANSI Z223.1/
NFPA 54 or Natural Gas and Propane Installa
-
tion Code CSA B149.1.
• Provide vertical support every 7' (2.1m).
• Slope the horizontal vent 1/4" for every
12" (300mm) towards the drain tee.
• The integrated condensate collector must be
used for total vent runs in excess of 3' (0.9m).
Remove the cap prior to attaching the drain
tubing.
• When 2 units are installed in a Quick Connect
Multi System, maintain a minimum distance of
3' (0.9m) between the vertical terminations.
